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The aim of the synthetic turf with underlaid shock pad is to provide additional impact absorption for the players. For this study, twelve active and healthy recreational male athletes performed 60 cm drop landing with a controlled landing style on five surfaces: a regular surface (force platform), a...
The purpose of this study is to explore how individuals with transtibial amputation walk with vs. without a toe joint in their prosthetic foot, as well as to quantify how toe joint stiffness affects gait biomechanics and metabolic cost. We created a custom foot prosthesis that enables us to systemat...
Our aim was to provide evidence that the Landing Error Scoring System (LESS) – an injury-risk screening tool – can be automated using deep-learning based computer vision combined with machine learning methods, and compare LESS prediction between cropping and machine learning methods. 2D videos f...
The purpose of this study was to investigate the dynamic stability of healthy older adults during turning under the dual task condition. A total of 16 healthy older adults were recruited and asked to perform a single walking task and a dual motor walking task. Kinematic data were collected by using ...
The purpose of this study was to measure the effects of a menthol-based topical analgesic on delayed onset muscle soreness (DOMS) induced changes to running biomechanics and pain. We measured perceived pain utilizing a comparative pain scale (CPS), and pain pressure threshold (PPT). Kinematics were ...
We are hypothesizing that when humans walk on the sloped surfaces, the foot placement is dependent on the slope angle and walking speed. In this paper, to have a better understanding of the relationship between the step length to the slope angle and walking speed, we performed a statistical analysis...
Plantar fasciitis is a common running injury often resulting in alterations in training, but it is unknown if gait mechanics differ based on injury status. This study examined gait kinematics in runners with current plantar fasciitis, resolved plantar fasciitis, and no history of plantar fasciitis.
The purposes of this study was to investigate the arch supporting effects of the Low-Dye taping with elastic tape on the healthy adults with pronated foot. Secondary, we also observed whether the supporting effect can last till the end of the exercise. Foot arch indices such as vertical navicular he...
MR images of the distal upper limb of four participants were obtained. Participants were braced in 3 different wrist postures (radial deviation, neutral, ulnar deviation), in combination with 3 forearm postures (pronation, mid, supination). The flexor digitorum superficialis (FDS2) and profundus (FD...
The purpose of this study was to examine the shock attenuation of the initial peak vertical force and the rate of loading between barefoot, traditional bowling shoes with minimalist midsole design and modified bowling shoes with E-TPU midsole design. The results indicated that the bowling footwear w...
Summary: Residual torque depression (TD) refers to the deficit in isometric torque following active muscle shortening, and has been associated with increased spinal excitability. In support of these observations, we demonstrated that tendon-evoked reflexes are attenuated in the TD state, which is at...
In the present study, five types of tendons were treated with different sterilization methods. Cyclic testing is used to determine the mechanical parameters that are evaluated after the comparison. On the basis of result, the vulnerability of freezing and gamma irradiation of TA and PL was less than...
Ultrasound shear wave velocity (SWV) is used to assess material properties of skeletal muscle, such as stiffness. Because specific tension and normalized short-range stiffness of muscle tissue vary linearly with activation and in a similar fashion across muscles with different architectures, we expe...
Increased gait variability in older adults has been found to increase fall risk. We propose that older adults can reduce gait variability by performing a lateral stepping training. Fourteen older adults aged 65+ underwent a six-week lateral stepping training 3-days/week. Gait variability was measure...
Ankle-foot orthosis (AFO) properties, particularly stiffness, can affect gait kinematics. Because AFOs are made from viscoelastic materials, the effects of stiffness may vary at different walking speeds. However, the impact of ankle flexion speed on AFO stiffness has not been thoroughly investigated...
Stroke is an acute cerebrovascular disease that might cause severe motor function impairment of upper limbs (UL) [1]. Although UL motor function can be improved through effective rehabilitation, deficiencies in fine motor (FM) skills often remain even after patients are discharged from rehabilitatio...
This study investigated whether prolonged and repetitive exercise stiffens the plantar soft tissue. Healthy early twenties female subjects with similar BMI but different majors (13 engineers and 13 ballerinas) were recruited. The plantar tissue thickness, peak pressure and force and pressure distrib...
The effect of weighted backpack positions on lower limb joint while walking on a lateral inclined surface was investigated in this study. The joint angle, joint moment, stance force and lower limb electromyography of seven heathy male subjects, while walking on a lateral inclined surface wearing no ...
Residual torque depression (rTD) is the decrease in isometric torque following active shortening of skeletal muscle, compared to a purely isometric contraction performed at the same muscle length and level of activation. This study investigated performance fatigability in males and females during pu...
The helical axes of motion for the proximal carpal bones were calculated using three-dimensional carpal position data from 10 subjects with varying degrees of wrist laxity. During mid-range wrist ulnar deviation, the triquetrum ulnar-deviated as the scaphoid and lunate extended. We found that with d...
The purpose of this study was to investigate the associations between kinematic compensations during the single-leg squat (SLS) and stride knee kinematics during the baseball pitch in adolescent baseball pitchers. A secondary purpose was to determine whether the SLS may be used as a lower extremity ...
Foot stiffness plays an important role in its mechanical function. The medial longitudinal arch (MLA) is thought to be the primary determinant of foot stiffness. Cadaveric studies bisecting the plantar fascia that maintains the MLA found that stiffness decreased by 25% [1,2]. Mathematical and physic...
A large dynamic joint stiffness (DJS) has been associated with skeletal injury, while a lower DJS has been associated with an increase in soft tissue injury [1]. Increased Co-contraction indices (CCI) have been linked to increased joint contact forces [2]. DJS and CCI were calculated to determine ho...
Fatigue decreases the performance and affects the postural control, but its after effect duration is not clear yet. This study aimed to investigate the effect of a specific fatigue protocol for handball athletes in the postural control. Handball athletes stood quietly on the force plate for 30 s. In...
Sustained postero-lateral glide at the glenohumeral joint is a manual therapy technique used for treating patients with shoulder pain. The aim of this study was to assess the effect of sustained glide on scapular muscle activity ratio. We used surface electromyography to monitor activity of three sc...
A previous study determined optimised glenosphere placement on reverse total shoulder arthroplasty (RTSA) in order to improve impingement free range of motion. The current study has evaluated the effect of this optimised placement on micromotion at the bone-implant interface using a finite element s...
Mobilisation is used for improving range of motion and reducing pain in patients with shoulder disorders. It is currently unclear what the underlying mechanisms of that technique are. This study aimed to assess the effect of inferior shoulder mobilisation on scapular and shoulder muscle activity, du...
The purpose of this study was to further understand the role of plantar-surface sensation in modulating muscle activity. The additional of texture to orthotics served as a mechanism to manipulate mechanoreceptors in the sole of foot. The study divided the plantar foot surface into 5 distinct areas. ...
The purpose of this study was to examine the effects of upper body posture on shoulder muscle activity and kinematics during shoulder exercises using TheraBand® elastic resistance. 12 healthy individuals performed 4 shoulder exercises using a TheraBand® CLX: 1) unilateral flexion to 90 degrees, 2)...
Surrogates for pronation, such as the longitudinal arch angle (LAA), the rear foot angle (γ), the Achilles tendon angle (β) and the Foot Posture Index (FPI-6), are often quantified. To date, it is unknown whether the FPI-6 is an appropriate proxy for the LAA, γ or β, and also, whether any of the...
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